Question

john saves 20% Of his monthly income. his monthly expendutire is 4800 find his monthly income

Answer 1

20% = 1/5
here 5 Unit = income
1 unit save
4 unit= expenditure
than ,
4 = 4800
1 = 4800/4= 1200
5 = 5 × 1200= 6000

Answer 2

Saving: 20% of monthly income
Monthly Expenses : 80%
Monthly Expenses : 4800

Let the monthly income be x
$x \times \frac{80}{100} = 4800 \\ x \times 80 = 480000 \\ x = \frac{480000}{80} \\ x = 6000$